Mid 2008, there were 380 kilometres of railway track,[1] 171 stations and 28 lines.[2] In 2007, about 355’653 passengers used the system every day.[2]

Each line generally has two trains an hour.

Each line has two trains per hour. That way, there are 16 trains per hour between Altsetten and Zürich HB (Main station), or one train ever 4 minutes.

Since 2002, there are also 7 lines that run during the night during week-ends, in the nights Friday-Saturday, and Saturday- Sunday. Usually, there is one train per hour. Some lines only have one train every two hours. These are complemented by a number of bus lines. Usually, traveling with these night lines is subject to an extra fare, which has to be bought in addition to the normal ticket.

The tunnel shown in red dashed lines will allow trains from Winterthur and Oerlikon to pass through Zurich main station without changing directions. Plans are to finish the tunnel by 2015

At the moment, between 75 and 80 million people use the system every year. About 70% of the people living in the agglomeration use the system. Plans include gradually introducing 4 trains per hour on most lines, and to extend the offer to 4 trains per hour between Zürich and Winterthur during the whole day, and not just during rush hour. A new tunnel was built in Zürich main station. This tunnel allows a direct connection from Zürich main station to Oerlikon and the airport, without a change of direction.